The present invention provides a zoom lens which has high zoom ratio and small size and a camera device, wherein the zoom lens is provided with the following components from the object side: a first lens group which is fixed in zooming and focusing and has positive refractive power; a second lens group which moves in zooming and has negative refractive power; a third lens group which is fixed in zooming and focusing and has positive refractive power; a fourth lens group which moves in zooming and has positive refractive power; and a fifth lens group which moves in zooming and has positive refractive power. When the zoom lens zooms from a wide-angle end to the telescope end, the fifth lens firstly moves to the object side and reverses to the image side in the middle way for moving with a mode of drawing-out a moving track with a convex arc shape which projects into the object side. Furthermore the following conditional expression is satisfied, wherein deltaTM is the movement amount of the fifth lens group when zooming from a lens position of (fw*ft)<1/2> to a lens position of the telescope end, fw is the focal distance of the whole system of the wide angle end, and ft is the focal distance of the whole system of the telescope end. 1.4< deltaTM/fw< 3.0...(1).